Patent US3616704A successfully refreshed from Google Patents.
US3616704A
Expired / Lapsed
US
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Apparatus for regulating the admission of combustion air to burner grates having individual combustion zones
Assignee: Individual
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Filing: 1969-10-23
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Granted: 1971-11-02
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Expires: 1989-10-23
Abstract
Abstract A PLURALITY OF AT LEAST SUBSTANTIALLY PARALLEL CONTROL RODS ARE EACH SHIFTABLE A PREDETERMINED MAXIMUM DISTANCE IN OPPOSITE DIRECTIONS BETWEEN END POSITIONS IN WHICH EACH ROD CLOSES AND FULLY OPENS, RESPECTIVELY, AN AIR ADMISSION PORT COMMUNICATING WITH ONE OF THE COMBUSTION ZONES OF THE GRATE. A LINKING MEMBER EXTENDS TRANSVERSELY TO THE AFOREMENTIONED DIRECTIONS AND IS CONNECTED WITH THE CONTROL RODS. SHIFTING MEANS EFFECTS SHIFTING OF THE LINKING MEMBER IN THE AFOREMENTIONED DIRECTIONS IN A SENSE EFFECTING SHIFTING OF THE RESPECTIVE CONTROL RODS THROUGH DIFFERENT DISTANCES BETWEEN THEIR END POSITIONS.
Inventors
- 👤 Johannes Josef Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:42
CPC Classifications
F; F23; F23L; F23L13/00; F23L13/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |